class A1 {
  Object get() {
    return null;
  }
}
class B1 extends A1 {
  Integer get(){
    return new Integer(100);
  }
}
public class Example5_6 {
  public static void main (String args[]){
    B1 b=new B1();
    Integer t=b.get();
    System.out.println(t.intValue());
  }
}
